dev.workers.quietworklabs.email-auth-check/email-auth-check

up checked 2026-11-10T23:37:54.128Z

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Publisher-provided title

Email Auth Checker

Publisher-provided description

SPF, DKIM, DMARC, MTA-STS and domain-expiry checks for any domain, with SPF lookup counts.

Summary by lookupd

Checks a domain's SPF, DKIM, DMARC, MTA-STS and registration expiry, returning SPF lookup counts and an auth report.

Install

Claude Code, remote (streamable-http)

claude mcp add --transport http email-auth-check https://email-auth-check.quietworklabs.workers.dev/mcp

Codex, remote (streamable-http)

codex mcp add email-auth-check --url https://email-auth-check.quietworklabs.workers.dev/mcp

Cursor, remote (streamable-http) → .cursor/mcp.json

{
  "mcpServers": {
    "email-auth-check": {
      "url": "https://email-auth-check.quietworklabs.workers.dev/mcp"
    }
  }
}

Other clients: docs. Or tell your agent: Set up lookupd for me: read https://lookupd.com/agent.md and follow it.

Tools (4 tools)

Publisher-provided text

• email_auth_report Full email-auth report for a domain: SPF (recursive 10-lookup count, void lookups, +all/?all, terms after all), DMARC (policy, pct, alignment, rua authorization
• spf_lookup_count Expands a domain's SPF record recursively (include/redirect) like a receiver does and counts DNS-querying terms against the RFC 7208 limit of 10 and void lookup
• dmarc_check Finds and validates a domain's DMARC record (falls back to the organizational domain): policy, subdomain policy, pct, alignment modes, rua/ruf, and whether exte
• domain_expiry Registration data for a domain from the registry's RDAP server (IANA bootstrap): registrar, created/updated/expiry dates, days until expiry with ok/expiring_soo

Details

• Version: 1.0.0
• Transports: streamable-http
• Uptime (7 days): 100%
• Median latency: 336 ms
• First indexed: 2026-11-01T09:02:03.636Z
• Last seen in registry: 2026-11-01T09:02:03.636Z
• Website: https://email-auth-check.quietworklabs.workers.dev/

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• 62141 servers
• Last crawl: 2026-11-11T18:39:04.612Z
• API base: https://api.lookupd.com
• MCP URL: https://api.lookupd.com/mcp